Failing to test "IntelTensorFlow_for_LLMs" sample in CI

Summary

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The "IntelTensorFlow_for_LLMs" sample takes ~5hrs to run on CI. Hence, the sample timeouts in CI.

Environment

OS: Linux

Observed behavior

The sample shows how to finetune a 6B model, which takes ~5hrs on CPU. This makes it hard to test the sample on CI.

Expected behavior

Ideally, the sample should not take more than few minutes to run. We can use environment variable to check if the sample is running on CI and run it for a few batches in CI. This would be more than enough to test the correctness of the code sample.

定位 IntelTensorFlow_for_LLMs 示例以及运行它的 CI 配置。了解该示例如何执行 finetuning 以及 CI 如何调用它，然后验证通过 CI 专用的环境变量路径可以只运行少量 batches，同时在 CI 之外保留正常的长时间运行。